GeForce GT 640M vs P106 100

When choosing between GeForce GT 640M and P106 100, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 640M and P106 100.

GeForce GT 640M is a Laptop Graphics Card

Note: GeForce GT 640M is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce GT 640M here:

Main Specs

  GeForce GT 640M P106 100
Power consumption (TDP) 32 Watt 120 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 6 GB
Display Connectors No outputs No outputs
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  • P106 100 has 275% more power consumption, than GeForce GT 640M.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • P106 100 has 4 GB more memory, than GeForce GT 640M.
  • GeForce GT 640M is used in Laptops, and P106 100 - in Desktops.
  • GeForce GT 640M is build with Kepler architecture, and P106 100 - with Pascal.
  • GeForce GT 640M is manufactured by 28 nm process technology, and P106 100 - by 16 nm process technology.
  • Memory clock speed of P106 100 is 6208 MHz higher, than GeForce GT 640M.

Game benchmarks

high / 1080p 0−1 35−40
ultra / 1080p 0−1 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 10−12 60−65
medium / 1080p 2−3 40−45
The average gaming FPS of P106 100 in Assassin's Creed Odyssey is 766% more, than GeForce GT 640M.

Full Specs

  GeForce GT 640M P106 100
Architecture Kepler Pascal
Code name N13P-GS GP106
Type Laptop Desktop
Release date 22 March 2012 19 June 2017
Pipelines 384 1280
Core clock speed 1506 MHz
Boost Clock 645 MHz 1709 MHz
Transistor count 1,270 million 4,400 million
Manufacturing process technology 28 nm 16 nm
Texture fill rate 136.7
Floating-point performance 480.0 gflops 4,375 gflops
Length 250 mm
Memory bus width 128bit 192 Bit
Memory clock speed 1800 - 4000 MHz 8008 MHz
Memory bandwidth 192.2 GB/s
Shared memory -
DirectX 12 API 12 (12_1)
Shader Model 5.1 6.4
OpenGL 4.5 4.6
OpenCL 1.1 1.2
Vulkan 1.1.126 1.2.131
CUDA + 6.1
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
3D Blu-Ray +
Bitcoin / BTC (SHA256) 18 Mh/s
Laptop size medium sized
Optimus +
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